> What is the sanctioned way of removing hints? rm -f HintsColumnFamily*? > Truncate from CLI? There is a JMX command to do it for a particular node. But if you just want to remove all of them, stop and delete the files.
> the only one with zero size are the -tmp- files. It seems odd… Temp files are created during compaction and flushing sstables. Cheers ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 11/03/2013, at 11:19 PM, Janne Jalkanen <janne.jalka...@ecyrd.com> wrote: > > Oops, forgot to mention that, did I… Cass 1.1.10. > > What is the sanctioned way of removing hints? rm -f HintsColumnFamily*? > Truncate from CLI? > > This is ls -l of my /system/HintsColumnFamily/ btw - the only one with zero > size are the -tmp- files. It seems odd… > > -rw-rw-r-- 1 ubuntu ubuntu 86373144 Jan 26 21:39 > system-HintsColumnFamily-hf-11-Data.db > -rw-rw-r-- 1 ubuntu ubuntu 80 Jan 26 21:39 > system-HintsColumnFamily-hf-11-Digest.sha1 > -rw-rw-r-- 1 ubuntu ubuntu 976 Jan 26 21:39 > system-HintsColumnFamily-hf-11-Filter.db > -rw-rw-r-- 1 ubuntu ubuntu 11 Jan 26 21:39 > system-HintsColumnFamily-hf-11-Index.db > -rw-rw-r-- 1 ubuntu ubuntu 4348 Jan 26 21:39 > system-HintsColumnFamily-hf-11-Statistics.db > -rw-rw-r-- 1 ubuntu ubuntu 569 Feb 27 08:33 > system-HintsColumnFamily-hf-23-Data.db > -rw-rw-r-- 1 ubuntu ubuntu 80 Feb 27 08:33 > system-HintsColumnFamily-hf-23-Digest.sha1 > -rw-rw-r-- 1 ubuntu ubuntu 1936 Feb 27 08:33 > system-HintsColumnFamily-hf-23-Filter.db > -rw-rw-r-- 1 ubuntu ubuntu 11 Feb 27 08:33 > system-HintsColumnFamily-hf-23-Index.db > -rw-rw-r-- 1 ubuntu ubuntu 4356 Feb 27 08:33 > system-HintsColumnFamily-hf-23-Statistics.db > -rw-rw-r-- 1 ubuntu ubuntu 5500155 Feb 27 08:57 > system-HintsColumnFamily-hf-24-Data.db > -rw-rw-r-- 1 ubuntu ubuntu 80 Feb 27 08:57 > system-HintsColumnFamily-hf-24-Digest.sha1 > -rw-rw-r-- 1 ubuntu ubuntu 16 Feb 27 08:57 > system-HintsColumnFamily-hf-24-Filter.db > -rw-rw-r-- 1 ubuntu ubuntu 26 Feb 27 08:57 > system-HintsColumnFamily-hf-24-Index.db > -rw-rw-r-- 1 ubuntu ubuntu 4340 Feb 27 08:57 > system-HintsColumnFamily-hf-24-Statistics.db > -rw-rw-r-- 1 ubuntu ubuntu 0 Feb 27 08:57 > system-HintsColumnFamily-tmp-hf-25-Data.db > -rw-rw-r-- 1 ubuntu ubuntu 0 Feb 27 08:57 > system-HintsColumnFamily-tmp-hf-25-Index.db > > > /Janne > > On Mar 12, 2013, at 08:07 , aaron morton <aa...@thelastpickle.com> wrote: > >> What version of cassandra are you using? >> I would stop each node and delete the hints. If it happens again I could >> either indicate a failing disk or a bug. >> >> Cheers >> >> ----------------- >> Aaron Morton >> Freelance Cassandra Consultant >> New Zealand >> >> @aaronmorton >> http://www.thelastpickle.com >> >> On 11/03/2013, at 2:13 PM, Robert Coli <robert.d.a.c...@gmail.com> wrote: >> >>> On Mon, Mar 11, 2013 at 7:05 AM, Janne Jalkanen >>> <janne.jalka...@ecyrd.com> wrote: >>>> I keep seeing these in my log. Three-node cluster, one node is working >>>> fine, but two other nodes have increased latencies and these in the error >>>> logs (might of course be unrelated). No obvious GC pressure, no disk >>>> errors that I can see. Ubuntu 12.04 on EC2, Java 7. Repair is run >>>> regularly. >>>> >>>> My two questions: 1) should I worry, and 2) what might be going on, and 3) >>>> is there any way to get rid of these? Can I just blow my HintedHandoff >>>> table to smithereens? >>> >>> http://svn.apache.org/repos/asf/cassandra/trunk/src/java/org/apache/cassandra/io/sstable/IndexHelper.java >>> " >>> public static Filter defreezeBloomFilter(FileDataInput file, long >>> maxSize, boolean useOldBuffer) throws IOException >>> { >>> int size = file.readInt(); >>> if (size > maxSize || size <= 0) >>> throw new EOFException("bloom filter claims to be " + size >>> + " bytes, longer than entire row size " + maxSize); >>> ByteBuffer bytes = file.readBytes(size); >>> " >>> >>> Based on the above, I would suspect either a zero byte -Filter.db file >>> or a corrupt one. Probably worry a little bit, but only a little bit >>> unless your cluster is RF=1. >>> >>> =Rob >> >
